Content - Volume 55, Issue 74
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Ultrastructural findings in normal human sebaceous follicles, of comedones from acne patients, and from comedones during topical treatment with vitamin A acid (VAA) are described. In normal human sebaceous follicles, the two segments of the infundibulum-the acroinfundibulum and the infrainfundibulum-show differing ultramorphological patterns of keratinization. The incomplete horny layer of the inf ...